Dynamic Light Scattering (DLS)

LDH aggregate size distribution was measured by dynamic
light scattering at 25°C with a DynaPro Plate Reader
(Wyatt Technology, Santa Barbara, CA). All LDH samples
were diluted to 0.1 mg/ml before measurement. Scattered
light intensity was collected at 90º to the incident light. The
signal intensity was then averaged over a five-second period
to obtain autocorrelation functions using manufacturer’s
software, DYNAMICS (Wyatt Technology, Santa Barbara,
CA). Twenty acquisitions were averaged to make one
measurement, and three measurements were conducted for
each LDHsample. In data analysis, aggregate size distribution
and polydispersity were determined using the regularization
method implemented in the DYNAMICS software.